Acetabular Focal Chondral Lesions Are Not Associated With Worse Outcomes After Periacetabular Osteotomy: A Matched Group Analyses

J Arthroplasty. 2018 Jul;33(7S):S61-S65. doi: 10.1016/j.arth.2018.03.008. Epub 2018 Mar 14.


Background: The purpose of this study was to assess the outcomes of patients who underwent combined hip arthroscopy and periacetabular osteotomy with acetabular focal chondral defects and compare these outcomes with a group of patients without focal chondral defects.

Methods: A retrospective review looking at patients who underwent hip arthroscopy and/or periacetabular osteotomy was performed. Minimum 2-year follow-up, Tönnis grade 0-1, and a Beck chondromalacia stages 4-5 were included. Twenty-eight hips met inclusion criteria. These patients were then matched 1:1 and compared.

Results: The average acetabular chondral defect size was 144.3 mm2 ± standard deviation 116.2. Postoperative, modified Harris Hip Score, Hip Disability and Osteoarthritis Outcome Score, and University of California Los Angeles scores were similar between groups (P = .382, P = .755, P = .763, respectively). At the last follow-up, Tönnis grade was similar between groups (P = .552). No association between having a defect and increased risk of failure was noted (hazard ratio 1.35 [95% CI 0.43-4.24], P = .607).

Conclusion: We found that patients with focal chondral defects did similar to a comparison group of patients without chondral defects.

Keywords: acetabular dysplasia; chondral defect; hip arthroscopy; hip preservation; periacetabular osteotomy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetabulum / surgery*
  • Adult
  • Arthroscopy / adverse effects*
  • Arthroscopy / methods*
  • Cartilage Diseases / surgery
  • Disabled Persons
  • Female
  • Follow-Up Studies
  • Hip / surgery
  • Humans
  • Male
  • Middle Aged
  • Osteoarthritis, Hip / surgery
  • Osteotomy / adverse effects*
  • Proportional Hazards Models
  • Retrospective Studies
  • Severity of Illness Index
  • Treatment Outcome
  • Young Adult